Accomplish the indicated achievement to get the corresponding number of Gamerscore points:

Boys to Men (80 points): Successfully complete all of the drills in Training Camp.
First of Many (10 points): Pick up a 1st Down in a single player Exhibition or League game.
Paydirt (10 points): Score a Touchdown in a single player Exhibition or League game.
Moving the Chains (40 points): Pick up 500 offensive yards in a single player Exhibition or League game.
Armed and Dangerous (10 points): Stiff arm an opposing player in a single player Exhibition or League game.
A Spin Around the Block (10 points): Spin around an opposing player in a single player Exhibition or League game.
Good Eye, Strong Arm, Safe Hands (20 points): Throw 10 complete passes in a single player Exhibition or League game.
The Last Gasp (10 points): Convert a 4th down in single player Exhibition or League game.
Stealing the Feeling (40 points): Intercept the ball in a single player Exhibition or League game, without player switching.
From the Hurt, to the Dirt (10 points): Tackle the ball carrier in a single player Exhibition or League game, without player switching.
Quarter Pounder, with Cheese (20 points): Sack the Quarterback 3 times in a single player Exhibition or League game, without player switching.
Quarter Pounder (10 points): Sack the Quarterback in a single player Exhibition or League game, without player switching.
To the Hizzy (40 points): Score a defensive touchdown in a single player Exhibition or League game, without player switching.
In the Bag (20 points): Win a single player Exhibition or League game.
Shut Out (60 points): Win a single player Exhibition or League game without your opponent scoring.
Swaggerlicious (10 points): Showboat for 20 yards in any single player game mode.
Season Finale (80 points): Win the 32 team league in Season mode.
On the Up (60 points): Win the 16 team league in Season mode.
Big Fish, Small Pond (40 points): Win the 8 team league in Season mode.
Flawless (60 points): Complete a season undefeated in Season mode.
End of the Road (80 points): Complete Road to Backbreaker.
Half Wave There (40 points): Reach Wave 50 in a single player Tackle Alley game.
Parting Wave (60 points): Complete the final wave in a single player Tackle Alley game.
Hustle and Muscle (20 points): Perform a x5 combo in a single player Tackle Alley game.
Invincible (20 points): Perform a x5 streak in a single player Tackle Alley game.
Something from Nothing (40 points): Create a Custom Team.
Online, On form (60 points): Win 20 online Exhibition games.
Head to Head (20 points): Win an online Exhibition game.
Create and Dominate (20 points): Take a custom team online.